Merlin did not stay in the tower the entire time. He could now start on two tasks.
The first was to use this one month's time wholly to brew Mokra Potion, consuming each batch the moment it was completed. However, in this manner, Merlin would be unable to consume a few batches of Mokra Potion. The growth of his Mind Power would not be obvious, and it would not reach a stage where it was sufficient to construct Fourth-level spells.
The second thing was to head to the Resource Tower to exchange for some spells and knowledge on constructing spells as well as some knowledge on runology, and even alchemy and potions. He would then bring these items back to Wilson Castle. If he wanted to develop the Wilson clan into a Spell Caster clan, he could not do without these things.
